The main forms of Poker are Draw Poker and Stud Poker. In Draw Poker, all the cards are dealt face down to the players. In Stud Poker, some of the cards are dealt face up as the betting progresses, so that all of the other players get to see a part of each player's hands.
A phylogenetic tree or evolutionary tree is a branching diagram or  tree  showing the inferred evolutionary relationships among various biological species or other entitiesâtheir phylogeny âbased upon similarities and differences in their physical or genetic characteristics.
The big issues. Using the tree for classification. Biologists use phylogenetic trees for many purposes, including: Testing hypotheses about evolution. Learning about the characteristics of extinct species and ancestral lineages. Classifying organisms.